CN103834069A - Preparation method of nano-silver-containing magnetic chitin microspheres - Google Patents
Preparation method of nano-silver-containing magnetic chitin microspheres Download PDFInfo
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- CN103834069A CN103834069A CN201410059773.7A CN201410059773A CN103834069A CN 103834069 A CN103834069 A CN 103834069A CN 201410059773 A CN201410059773 A CN 201410059773A CN 103834069 A CN103834069 A CN 103834069A
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Abstract
The invention discloses a preparation method of nano-silver-containing magnetic chitin microspheres. The preparation method comprises the following steps: dispersing chitin in a mixed aqueous liquid of 6-15wt% of sodium hydroxide and 4-8wt% of urea, and dissolving by using a freezing-unfreezing circulating method so as to prepare a chitin concentrated liquid; dispersing 7wt% of chitin liquid by adopting an emulsion method, and transforming by using sol-gel so as to prepare chitin microspheres; and finally obtaining Ag-Fe3O4 by a one-pot method through in-situ synthesis, thus preparing the magnetic chitin microspheres with a catalytic effect. The preparation method is simple in process, low in cost, safe and pollution-free and is a green technology for producing the magnetic chitin microspheres. The magnetic chitin microspheres have good magnetic responsiveness and are convenient to recycle and reuse; and by serving as a catalyst, the magnetic chitin microspheres have a high-efficiency rapid catalytic effect on reduction of nitrophenol.
Description
Technical field
The preparation method who the present invention relates to a kind of magnetic chitin microballoon that contains nanometer silver, belongs to technical field of polymer materials.
Background technology
Chitin is that occurring in nature content is only second to cellulosic natural polymer, is extensively present in shrimp shell, crab shell, insect shell and some algae and fungis.Because it contains a large amount of kharophens, it has germ resistance, and bactericidal properties is antitumor, a lot of good biological properties such as immunostimulant.But because chitin is extremely difficult to dissolve, up to the present it remain a kind of minimum biomass resource that develops.Polymer microsphere, owing to can being widely used in the fields such as pharmaceutical carrier, support of the catalyst, is paid close attention to just in large quantities.And up to the present, the preparation of the dissolving of chitin and chitin microballoon remains a great problem.
Chitin can adsorb a large amount of heavy metal ion by the sequestering action of kharophens a large amount of on its molecular chain, from but a kind of very good heavy metal absorbent.And this specific character of chitin is also indicating that its field at synthetic and stable inorganic nanoparticle has broad application prospects.And the magnetic macromolecular microsphere that contains functional nano particle is because it is in the broad prospect of application in the field such as catalyst recovery and recycling, also day by day receive publicity.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of the magnetic chitin microballoon that contains nanometer silver, and its cost is low, safe and reliable.
The first dissolution in low temperature Mierocrystalline cellulose of the present invention obtains cellulose solution, and using it as disperse phase, take whiteruss as external phase, adopts emulsion method to prepare the narrower regeneration chitin microballoon of distribution of sizes.Recycle afterwards the adsorptivity of chitin to heavy metal ion, further in chitin microballoon hole, synthesize Ag-Fe by " one kettle way " original position
3o
4nanoparticle, and then successfully prepared the magnetic chitin microballoon that contains nanometer silver.This kind of chitin microballoon has katalysis, can be used as catalyzed reaction filled column, for the rapid hydrogenation reaction of nitrophenols.
The technical scheme of stating of the present invention comprises the steps:
(1) be refrigerated to after the chitin powder of purifying and alkali aqueous solution, alkali-aqueous solution of urea or alkali-thiourea solution are mixed below freezingly, at room temperature thaw, repeated freezing-thaw 1-2 time, after centrifugal transparent chitin solution;
(2) the chitin Solution Dispersion of being prepared by step (1) is in the organic solution that contains emulsifying agent, after at 0 ℃, constant speed is stirred to drop and is uniformly dispersed, be warming up at 20 ℃ and solidify 30 minutes, add afterwards at 20 ℃ of epoxy chloropropane and mix 2 hours, neutralize and make its pH become neutral with acid, thereby obtain chitin microballoon, clean afterwards to pH be 7;
(3) preparation-obtained chitin microballoon is soaked in to FeCl
2in solution, be heated to 90 ℃, then add successively NaOH and AgNO
3thereby solution makes the magnetic chitin microballoon that contains nanometer silver.
The magnetic chitin microballoon that what aforesaid method of the present invention was prepared contain nanometer silver can be used as filler packed reaction column, is reduced into amino-phenol for efficient catalytic nitrophenols.
Preferably, in step (1), chitin solution is dissolved in sodium hydroxide-aqueous solution of urea and is made by chitin as one, and wherein naoh concentration is 2-25wt%, and urea concentration is 1-20wt%, and all the other are water.Further preferably naoh concentration is 6-15wt%; Urea concentration is 4-8wt%, and all the other are water.
In step (2), every 10ml chitin solution adds 1ml epoxy chloropropane.
Emulsifying agent in described step (2) is one or both in Tween-80 and Span-80.The organic solvent using is whiteruss, octane-iso, hexanaphthene or toluene etc.The volume of its chitin solution is the 10%-30% of organic solvent volume.
Washing in described step (2) is for first using deionized water wash, then uses absolute ethanol washing, finally uses deionized water wash.
FeCl in described step (3)
2concentration is 5-90mol/L, FeCl
2with AgNO
3mol ratio be 1:1-1:3, FeCl
2with the mol ratio of NaOH be 1:6-1:10.
Utilizing its particle diameter of regeneration chitin microballoon prepared by aforesaid method is 150～420 μ m, and distribution of sizes is narrower.Prepared magnetic chitin microballoon can be positioned in 75% alcohol and store, also further stored dry after freeze-drying.
The advantage that the present invention compared with prior art possessed: utilize alkali/aqueous solution of urea system can realize at low temperatures the dissolving of chitin, this process operation is simple, nontoxic, efficient and environmental friendliness, and in the dissolving regenerative process of chitin, the molecular weight of chitin and acetyl degree significantly do not change, retain the original characteristic that can Adsorption of Heavy Metal Ions of chitin, utilize this specific character, it can be used for synthesizing and stable inorganic nanoparticle, and we prepare magnetic chitin microballoon with " one kettle way ", method is very simple, and this kind of magnetic chitin microballoon is convenient to recycling, can also be used to do column packing, for the rapid hydrogenation reaction of nitrophenols.
Accompanying drawing explanation
Fig. 1 is the microscope picture of pure chitin balls (a) and magnetic chitin balls (b).
Fig. 2 be the magnetic chitin microballoon (a, b, c) of different nanoparticle content scanning electron microscope picture (in figure scale be 50 μ m).
Fig. 3 is that magnetic chitin balls becomes amino-phenol as catalyzed reaction column packing catalyzed reaction nitrophenols hydrogenation.
Embodiment
Below will illustrate the present invention by embodiment, but these specific embodiments do not limit the present invention in any way protection domain.Raw material that the present embodiment is used all can be buied in market.
Embodiment 1
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 9g Tween-80,3g Span80,300ml whiteruss adds 60ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 150 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml15mmol/LFeCl
230min post-heating to 90 ℃ in solution, adds 10ml1mol/L NaOH, and then adds 10ml0.2mmol/L AgNO
3solution, obtains overall dimension and is distributed in 150 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 15wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Embodiment 2
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 6g Tween-80,2g Span80,300ml whiteruss adds 60ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 200 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml15mmol/LFeCl
230min post-heating to 90 ℃ in solution, adds 10ml1mol/L NaOH, and then adds 10ml0.2mmol/L AgNO
3solution, obtains overall dimension and is distributed in 200 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 15wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.。
Embodiment 3
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 4.5g Tween-80,1.5g Span80,300ml whiteruss adds 60ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 250 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml15mmol/L FeCl
230min post-heating to 90 ℃ in solution, adds 10ml1mol/L NaOH, and then adds 10ml0.2mmol/L AgNO
3solution, obtains overall dimension and is distributed in 250 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 15wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Embodiment 4
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 4.5g Tween-80,1.5Span80,300ml whiteruss adds 75ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 310 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml15mmol/L FeCl
230min post-heating to 90 ℃ in solution, adds 10ml1mol/L NaOH, and then adds 10ml0.2mmol/L AgNO
3solution, obtains overall dimension and is distributed in 310 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 15wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Embodiment 5
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 6g Tween-80,1.5g Span80,300ml whiteruss adds 90ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 370 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml15mmol/LFeCl
230min post-heating to 90 ℃ in solution, adds 10ml1mol/L NaOH, and then adds 10ml0.2mmol/L AgNO
3solution, obtains overall dimension and is distributed in 370
μm magnetic chitin balls, its Ag-Fe
3o
4content is 15wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Embodiment 6
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 6g Tween-80,300ml whiteruss adds 60ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, post-heating to 20 ℃ maintains 30min, add again 2ml epoxy chloropropane, stir 2 hours, obtain overall dimension and be distributed in the pure chitin balls at 420 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml15mmol/L FeCl
2solution, obtains overall dimension and is distributed in 420 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 15wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Embodiment 7
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 4.5g Tween-80,1.5g Span80,300ml whiteruss adds 60ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 250 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml30mmol/L FeCl
230min post-heating to 90 ℃ in solution, adds 10ml2mol/L NaOH, and then adds 10ml0.4mmol/L AgNO
3solution, obtains overall dimension and is distributed in 250 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 18wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Embodiment 8
After adding the solvent system of 11wt%NaOH, 4wt% urea and water composition to be chilled to-30 ℃ in the chitin powder of purifying, at room temperature thaw, repeated freezing-course of defrosting 2 times, obtains 7wt% chitin solution.Obtain transparent chitin solution at 0 ℃ with 6000rpm rotating speed evacuation and centrifugal degassing.Under 0 ℃ of ice-water bath, in 500ml there-necked flask, add 4.5g Tween-80,1.5g Span80,300ml whiteruss adds 60ml7wt% chitin solution stirring 1 hour after stirring 30min with 500r/min speed, and post-heating to 20 ℃ maintains 30min, then adds 2ml epoxy chloropropane, stir 2 hours, obtain the pure chitin balls that overall dimension is distributed in 250 μ m places, after cleaning with deionized water and ethanol, 20ml chitin balls is soaked in to 80ml45mmol/L FeCl
230min post-heating to 90 ℃ in solution, adds 10ml3mol/L NaOH, and then adds 10ml0.6mmol/L AgNO
3solution, obtains overall dimension and is distributed in 250 μ m magnetic chitin balls, its Ag-Fe
3o
4content is 20wt%.This magnetic chitin balls becomes amino-phenol for column packing catalysis sodium borohydride reduction nitrophenols, as Fig. 3, after yellow nitrophenols and the filler of the mixing solutions of sodium borohydride through magnetic chitin microballoon, has been reduced into colourless amino-phenol.
Claims (10)
1. a preparation method who contains the magnetic chitin microballoon of nanometer silver, is characterized in that comprising the steps:
(1) be refrigerated to after the chitin powder of purifying and alkali aqueous solution, alkali-aqueous solution of urea or alkali-thiourea solution are mixed below freezingly, at room temperature thaw, repeated freezing-thaw 1-2 time, after centrifugal transparent chitin solution;
(2) the chitin Solution Dispersion of being prepared by step (1) is in the organic solution that contains emulsifying agent, after at 0 ℃, constant speed is stirred to drop and is uniformly dispersed, be warming up at 20 ℃ and solidify 30 minutes, add afterwards at 20 ℃ of epoxy chloropropane and mix 2 hours, neutralize and make its pH become neutral with acid, thereby obtain chitin microballoon, clean afterwards to pH be 7;
(3) preparation-obtained chitin microballoon is soaked in to FeCl
2in solution, be heated to 90 ℃, then add successively NaOH and AgNO
3thereby solution makes the magnetic chitin microballoon that contains nanometer silver.
2. method according to claim 1, is characterized in that, in step (1), chitin solution is dissolved in sodium hydroxide-aqueous solution of urea and is made by chitin, and wherein naoh concentration is 2-25wt%, and urea concentration is 1-20wt%, and all the other are water.
3. method according to claim 2, is characterized in that, naoh concentration is 6-15wt%; Urea concentration is 4-8wt%, and all the other are water.
4. method according to claim 1, is characterized in that, the emulsifying agent in described step (2) is one or both in Tween-80 and Span-80.
5. method according to claim 1, is characterized in that, the organic solvent of use is whiteruss, and the volume of chitin solution is the 10%-30% of organic solvent volume.
6. method according to claim 1, is characterized in that, in step (2), every 10ml chitin solution adds 1ml epoxy chloropropane.
7. method according to claim 1, is characterized in that, the washing in described step (2) is for first using deionized water wash, then uses absolute ethanol washing, finally uses deionized water wash.
8. method according to claim 1, is characterized in that, FeCl in described step (3)
2concentration is 5-90mol/L, FeCl
2with AgNO
3mol ratio be 1:1-1:3, FeCl
2with the mol ratio of NaOH be 1:6-1:10.
9. the prepared magnetic chitin microballoon that contains nanometer silver of any one in claim 1 ~ 8.
10. the magnetic chitin microballoon that contains nanometer silver claimed in claim 9 is reduced into amino-phenol for catalysis nitrophenols, it is characterized in that, the magnetic chitin microballoon that contains nanometer silver claimed in claim 9 is as filler packed reaction column.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624130A (en) * | 2015-02-12 | 2015-05-20 | 武汉大学 | Method for preparing regenerated chitin microspheres |
| CN105440297A (en) * | 2015-04-21 | 2016-03-30 | 湖南工业大学 | High-impact chitin composite gel preparation method |
| CN105771823A (en) * | 2016-02-25 | 2016-07-20 | 天津大学 | Method for preparing functional porous micro-spheres |
| CN107158454A (en) * | 2017-05-25 | 2017-09-15 | 福建师范大学 | The preparation method of the porous hemostatic microsphere of chitin |
| CN108579762A (en) * | 2018-05-11 | 2018-09-28 | 武汉轻工大学 | A kind of preparation method and rapid hydrogenation reaction method of the chitin base magnetism carbosphere of loading nano silvery |
| CN108579630A (en) * | 2018-05-11 | 2018-09-28 | 武汉轻工大学 | The method of pigment in the preparation method and separation grease of chitin nano fiber microballoon |
| CN109622032A (en) * | 2018-12-19 | 2019-04-16 | 武汉轻工大学 | The preparation method and rapid hydrogenation reaction method of cellulose magnetic microsphere |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416895A (en) * | 2002-12-02 | 2003-05-14 | 南京师范大学 | Slow releasing microballoon injection of fish mature accelerating hormone and its prepn |
| CN1607033A (en) * | 2003-10-15 | 2005-04-20 | 中国科学院过程工程研究所 | Chitose microsphere and microcapsule with uniform size and its preparation method |
| CN1686087A (en) * | 2005-03-30 | 2005-10-26 | 深圳市人民医院 | Nano-magnetic medicinal microglobule, its preparation method and application |
| KR100810141B1 (en) * | 2005-10-21 | 2008-03-05 | 가톨릭대학교 산학협력단 | PLGA micro-sphere particle and the method for manufacturing thereof |
| CN101215384A (en) * | 2008-01-11 | 2008-07-09 | 大连理工大学 | Method for preparing adsorbent recombination chitosan micro-sphere crosslinked resin |
| CN103059320A (en) * | 2013-01-29 | 2013-04-24 | 武汉大学 | Solvent composition for dissolving chitin |
-
2014
- 2014-02-21 CN CN201410059773.7A patent/CN103834069A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416895A (en) * | 2002-12-02 | 2003-05-14 | 南京师范大学 | Slow releasing microballoon injection of fish mature accelerating hormone and its prepn |
| CN1607033A (en) * | 2003-10-15 | 2005-04-20 | 中国科学院过程工程研究所 | Chitose microsphere and microcapsule with uniform size and its preparation method |
| CN1686087A (en) * | 2005-03-30 | 2005-10-26 | 深圳市人民医院 | Nano-magnetic medicinal microglobule, its preparation method and application |
| KR100810141B1 (en) * | 2005-10-21 | 2008-03-05 | 가톨릭대학교 산학협력단 | PLGA micro-sphere particle and the method for manufacturing thereof |
| CN101215384A (en) * | 2008-01-11 | 2008-07-09 | 大连理工大学 | Method for preparing adsorbent recombination chitosan micro-sphere crosslinked resin |
| CN103059320A (en) * | 2013-01-29 | 2013-04-24 | 武汉大学 | Solvent composition for dissolving chitin |
Non-Patent Citations (2)
| Title |
|---|
| 段博等: ""新型Ag-Fe3O4/甲壳素磁性微球的制备及表征"", 《2013年全国高分子学术论文报告会》 * |
| 汤虎: ""基于低温溶解制备的甲壳素新材料"", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624130A (en) * | 2015-02-12 | 2015-05-20 | 武汉大学 | Method for preparing regenerated chitin microspheres |
| CN105440297A (en) * | 2015-04-21 | 2016-03-30 | 湖南工业大学 | High-impact chitin composite gel preparation method |
| CN105440297B (en) * | 2015-04-21 | 2018-01-23 | 湖南工业大学 | A kind of preparation method of high-impact chitin plural gel |
| CN105771823A (en) * | 2016-02-25 | 2016-07-20 | 天津大学 | Method for preparing functional porous micro-spheres |
| CN105771823B (en) * | 2016-02-25 | 2018-06-15 | 天津大学 | A kind of preparation method of functional porous microballoon |
| CN107158454A (en) * | 2017-05-25 | 2017-09-15 | 福建师范大学 | The preparation method of the porous hemostatic microsphere of chitin |
| CN108579762A (en) * | 2018-05-11 | 2018-09-28 | 武汉轻工大学 | A kind of preparation method and rapid hydrogenation reaction method of the chitin base magnetism carbosphere of loading nano silvery |
| CN108579630A (en) * | 2018-05-11 | 2018-09-28 | 武汉轻工大学 | The method of pigment in the preparation method and separation grease of chitin nano fiber microballoon |
| CN108579630B (en) * | 2018-05-11 | 2020-06-23 | 武汉轻工大学 | Preparation method of chitin nanofiber microspheres and method for separating pigment in grease |
| CN109622032A (en) * | 2018-12-19 | 2019-04-16 | 武汉轻工大学 | The preparation method and rapid hydrogenation reaction method of cellulose magnetic microsphere |
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